/**
* @author AlbertDarren
* @contact 2563491540@qq.com
*/
#include <cstdio>
#include <cstring>
using namespace std;

int main_46()
{
    char str1[20]="I";
    char str2[11]="helloworld";
    strcpy(str1,str2);
    printf("%s\n",str1);
    strcat(str1,str2);
    printf("%s\n",str1);
    int n;
    sscanf("520","%d",&n);
    printf("%d\n",n);
    sprintf(str2,"%d",n);
    printf("%s\n",str2);
	return 0;
}
